package com.ruoyi.common.utils.sign;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang3.StringUtils;
import sun.misc.BASE64Decoder;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.spec.SecretKeySpec;
import java.math.BigInteger;

/**
 * @author xumh
 * @title: Aes
 * @projectName ruoyi
 * @description: TODO
 * @date 2024/12/1215:44
 */
public class Aes {
    private static final String KEY = "abcdefg622abcdef";
    private static final String ALGORITHMSTR = "AES/ECB/PKCS5Padding";

    public Aes() {
    }

    public static String aesDecrypt(String encrypt) {
        try {
            return aesDecrypt(encrypt, KEY);
        } catch (Exception var2) {
            var2.printStackTrace();
            return "";
        }
    }

    public static String aesEncrypt(String content) {
        try {
            return aesEncrypt(content, KEY);
        } catch (Exception var2) {
            var2.printStackTrace();
            return "";
        }
    }

    public static String binary(byte[] bytes, int radix) {
        return (new BigInteger(1, bytes)).toString(radix);
    }

    public static String base64Encode(byte[] bytes) {
        return Base64.encodeBase64String(bytes);
    }

    public static byte[] base64Decode(String base64Code) throws Exception {
        return StringUtils.isEmpty(base64Code) ? null : (new BASE64Decoder()).decodeBuffer(base64Code);
    }

    public static byte[] aesEncryptToBytes(String content, String encryptKey) throws Exception {
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        kgen.init(128);
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        cipher.init(1, new SecretKeySpec(encryptKey.getBytes(), "AES"));
        return cipher.doFinal(content.getBytes("utf-8"));
    }

    public static String aesEncrypt(String content, String encryptKey) throws Exception {
        return base64Encode(aesEncryptToBytes(content, encryptKey));
    }

    public static String aesDecryptByBytes(byte[] encryptBytes, String decryptKey) throws Exception {
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        kgen.init(128);
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        cipher.init(2, new SecretKeySpec(decryptKey.getBytes(), "AES"));
        byte[] decryptBytes = cipher.doFinal(encryptBytes);
        return new String(decryptBytes);
    }

    public static String aesDecrypt(String encryptStr, String decryptKey) throws Exception {
        return StringUtils.isEmpty(encryptStr) ? null : aesDecryptByBytes(base64Decode(encryptStr), decryptKey);
    }

    public static void main(String[] args) throws Exception {
        String content = "123";
        System.out.println("加密前：" + content);
        System.out.println("加密密钥和解密密钥："+KEY);
        String encrypt = aesEncrypt(content, KEY);
        System.out.println("加密后：" + encrypt);
        String decrypt = aesDecrypt(encrypt, KEY);
        System.out.println("解密后：" + decrypt);
    }
}
